Multiplex Reverse Transcription-PCR for Simultaneous Detection of Reovirus, Bovine Viral Diarrhea Virus, and Bovine Parainfluenza Virus during the Manufacture of Cell Culture-derived Biopharmaceuticals
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초록
Viral safety is an important prerequisite for clinical preparations of mammalian cell culture-derived biopharmaceuticals,because numerous adventitious viruses have been contaminated during the manufacturing process. In particular, Chinese hamster ovary (CHO) cells are highly susceptible to several RNA viruses including reovirus (Reo), bovine viral diarrhea virus (BVDV), and bovine parainfluenza virus (BPIV) and there have been reports of such viral contaminations. Therefore, viral detection during the CHO cell process is necessary to ensure the safety of biopharmaceuticals against viruses. In this study, a multiplex reverse transcription (RT)-PCR assay was developed and subsequently evaluated for its effectiveness as a means to simultaneously detect Reo, BVDV, and BPIV during the manufacture of cell culture-derived biopharmaceuticals. Specific primers for Reo, BVDV, and BPIV were selected, and a multiplex RT-PCR was optimized. The sensitivity of the assay for simultaneous amplification of all viral target RNAs was 7.76×102 TCID50/ml for Reo,7.44×101 TCID50/ml for BVDV, and 6.75×101 TCID50/ml for BPIV. The multiplex RT-PCR was proven to be very specific to Reo, BVDV, and BPIV and was subsequently applied to the validation of CHO cells artificially infected with each virus. It could detect each viral RNA from CHO cells as well as culture supernatants. Therefore, it was concluded that the multiplex RT-PCR assay can be applied to detection of the adventitious viruses during the manufacture of cell culture-derived biopharmaceuticals.
Abstract
Viral safety is an important prerequisite for clinical preparations of mammalian cell culture-derived biopharmaceuticals,because numerous adventitious viruses have been contaminated during the manufacturing process. In particular, Chinese hamster ovary (CHO) cells are highly susceptible to several RNA viruses including reovirus (Reo), bovine viral diarrhea virus (BVDV), and bovine parainfluenza virus (BPIV) and there have been reports of such viral contaminations. Therefore, viral detection during the CHO cell process is necessary to ensure the safety of biopharmaceuticals against viruses. In this study, a multiplex reverse transcription (RT)-PCR assay was developed and subsequently evaluated for its effectiveness as a means to simultaneously detect Reo, BVDV, and BPIV during the manufacture of cell culture-derived biopharmaceuticals. Specific primers for Reo, BVDV, and BPIV were selected, and a multiplex RT-PCR was optimized. The sensitivity of the assay for simultaneous amplification of all viral target RNAs was 7.76×102 TCID50/ml for Reo,7.44×101 TCID50/ml for BVDV, and 6.75×101 TCID50/ml for BPIV. The multiplex RT-PCR was proven to be very specific to Reo, BVDV, and BPIV and was subsequently applied to the validation of CHO cells artificially infected with each virus. It could detect each viral RNA from CHO cells as well as culture supernatants. Therefore, it was concluded that the multiplex RT-PCR assay can be applied to detection of the adventitious viruses during the manufacture of cell culture-derived biopharmaceuticals.
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